GB/T 20688.4-2023 English PDFUS$1759.00 · In stock
Delivery: <= 9 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 20688.4-2023: Rubber bearings - Part 4: Normal rubber bearings Status: Valid GB/T 20688.4: Historical versions
Basic dataStandard ID: GB/T 20688.4-2023 (GB/T20688.4-2023)Description (Translated English): Rubber bearings - Part 4: Normal rubber bearings Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G47 Classification of International Standard: 83.140.99 Word Count Estimation: 88,814 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Older Standard (superseded by this standard): GB/T 20688.4-2007 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 20688.4-2023: Rubber bearings - Part 4: Normal rubber bearings---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.ICS 83.140.99 CCSG47 National Standards of People's Republic of China Replace GB/T 20688.4-2007 Rubber bearing Part 4.Ordinary rubber bearings Rubberbearings- Part 4.Normalrubberbearings 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPrefaceⅠ Introduction IV 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 2 4 symbols 3 5 Classification and labeling 5 5.1 Category 5 5.2 Mark 6 6 Structural design 7 6.1 Plate support 7 6.2 Basin support 10 7 Technical requirements 14 7.1 Plate support 14 7.2 Basin support 19 8 Test methods 25 8.1 Finished product performance 25 8.2 Materials 25 8.3 Intrinsic quality 26 8.4 Appearance quality27 8.5 size 27 8.6 Process 28 9 Inspection Rules 28 9.1 Inspection classification 28 9.2 Inspection items and requirements 28 9.3 Determination Rule 30 10 Marking, packaging, transportation and storage30 Appendix A (Informative) Plate Bearing Specification Series 32 Appendix B (informative) Deformation of plate bearing in normal use state 63 Appendix C (Informative) Anchor components and bearing anchoring types 65 Appendix D (normative) Test methods for mechanical properties of finished plate bearings 68 Appendix E (normative) Test methods for mechanical properties of finished pot bearings 75 Appendix F (normative) Test methods for force measurement performance of finished force basin bearings 79ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 4 of GB/T 20688 "Rubber Bearings". GB/T 20688 has released the following parts. ---Part 1.Test methods for isolation rubber bearings; ---Part 2.Bridge isolation rubber bearings; ---Part 3.Building isolation rubber bearings; ---Part 4.Ordinary rubber bearings; ---Part 5.Building isolation elastic skateboard bearings. This document replaces GB/T 20688.4-2007 "Rubber Bearings Part 4.Ordinary Rubber Bearings" and is the same as GB/T 20688.4-2007 In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows. ---Changed the range of design vertical bearing capacity of ordinary rubber bearings (see Chapter 1, Chapter 1 of the.2007 edition); ---Added and changed terms and definitions (see Chapter 3, Chapter 3 of the.2007 edition); ---Added and changed symbols (see Chapter 4, Chapter 4 of the.2007 edition); ---Added the classification of type I and type II plate bearings, and changed the name code (see 5.1.1, 5.1.1 of the.2007 edition); ---The classification of pot-type bearings has been changed, the anti-seismic fixed bearings have been deleted, and the one-way movable bearings have been adjusted to longitudinal movable pot-type bearings and Laterally movable pot-type bearings (see 5.1.2, 6.1.1.1 of the.2007 edition), the classification of force-measuring pot-type bearings has been added (see 5.1.2); ---Changed the marking method of plate supports (see 5.2.1.1, 5.1.2.1 of the.2007 edition); ---Changed the marking method of basin supports and the marking method of displacement (see 5.2.1.2, 6.1.2.1 of the.2007 edition); ---Added plate bearing specification series, deformation description of plate bearing normal use state and design service life of ordinary rubber bearing requirements (see 6.1.1, 6.2.1); ---Changed the design requirements for the thickness of the rubber protective layer on the side of the plate bearing (see 6.1.4, 5.2.3 of the.2007 edition); ---Added the design requirements for the thickness of the silicone rubber protective ring of type II plate bearing (see 6.1.5); ---Added the structure and support anchoring type of the sliding plate bearing equipped with supporting steel plate, stainless steel cold-rolled steel plate, anchor bolt assembly and dust cover Formula (see 6.1.7); ---Added basin bearing anchor component structure and anchoring type (see 6.2.2~6.2.4); ---Deleted the thickness design requirements for the upper seat plate (see 6.2.4 of the.2007 edition); ---Changed the guide structure of the basin bearing and the structural design requirements of the plane sliding pair (see 6.2.5~6.2.7, 6.2.7~ of the.2007 edition 6.2.8), added the requirements for the setting of the sliding pair sealing ring and the structural design requirements for the force measuring basin support (see 6.2.6, 6.2.8); ---Changed the roughness of the lower surface of the pelvic cavity and the middle steel lining (see 6.2.10, 6.3.4.4 of the.2007 version); ---Changed the compressive stress design values of rubber pressure-bearing plates and sliding plates, and the thickness design requirements of rubber pressure-bearing plates (see 6.2.11, 6.2.12, 2007 version 6.2.5, 6.2.6); ---Changed the requirements for mechanical properties of finished plate bearings (see 7.1.1, 5.3.1 of the.2007 edition); ---The physical performance requirements of rubber materials for plate supports have been changed, and the physical properties of rubber materials for silicone rubber protective rings of type II plate supports have been added. Mechanical performance requirements (see 7.1.2.1, 5.3.2.1 of the.2007 edition); ---Added the types of skateboard materials used for plate supports and the friction coefficient requirements for skateboard materials (see 7.1.2.2); ---Added the material requirements for supporting steel plates of plate bearings (see 7.1.2.3), and changed the internal stiffening steel plates and sliding plates of the bearing body. Material requirements for stainless steel cold-rolled steel plates used in supporting bearings (see 7.1.2.3, 5.3.2.3 and 5.3.2.4 of the.2007 edition); ---Added material requirements for anchor bolt components (see 7.1.2.4, 7.2.2.5); ---Changed the requirements for surface flatness of plate bearings (see 7.1.4, 5.3.4 of the.2007 edition), and added the appearance quality of the silicone rubber protective ring Quantitative requirements (see 7.1.4); ---The requirements for plane size deviation of plate supports have been changed (see 7.1.5.1, 5.3.5.1 of the.2007 edition), and the thickness of plate supports has been increased In addition to the dimensional deviation requirements of 150mm (see 7.1.5.2), the dimensional deviation requirements for other steel plates except stiffened steel plates are added (see 7.1.5.3), the maximum deviation of surface flatness after welding of stainless steel cold-rolled steel plate and matching upper steel plate is added (see 7.1.5.5), added The thickness deviation requirements of silicone rubber protective rings for type II plate bearings are specified (see 7.1.5.6); --- Added requirements for welding, anti-corrosion, assembly and other processes (see 7.1.6, 7.2.6); ---The classification of the horizontal bearing capacity of basin bearings has been changed (see 7.2.1.2, 6.3.1.2 of the.2007 edition), and the movable bearings below Friction coefficient at -25°C (see 6.3.1.4 of the.2007 edition); ---Changed the requirements for basin support corner (see 7.2.1.3, 6.3.1.3 of the.2007 edition); --- Added displacement classification and force measurement performance requirements for pot-type bearings (see 7.2.1.5, 7.2.1.6); ---Changed the physical performance requirements for rubber materials for basin supports (see 7.2.2.1, 6.3.2.1 of the.2007 edition); ---Changed the requirements for the slide plate material for basin supports (see 7.2.2.2, 6.3.2.2 of the.2007 edition); ---Changed the material requirements for pot bearing steel castings and steel plates (see 7.2.2.3, 7.2.2.4, 6.3.2.3~6.3.2.5 of the.2007 edition); ---Added pressure transmitter for force measuring basin support, pot bearing SF-1 slider material and performance indicators of the slider and force measuring basin support. Requirements for dimethyl silicone oil for seats (see 7.2.2.8~7.2.2.10); ---Intrinsic quality requirements for basin supports have been added (see 7.2.3); ---Changed the appearance quality requirements of skateboards (see 7.2.4.2, 6.3.3.2 of the.2007 edition), adding steel castings, stainless steel cold-rolled steel Appearance quality requirements for plates, SF-1 sliders and finished bearing assemblies (see 7.2.4.3~7.2.4.6); ---The diameter size deviation of the rubber pressure-bearing plate of the pot bearing has been changed (see 7.2.5.1, 6.3.4.1 of the.2007 edition), and the diameter of the slide plate has been changed. Requirements for diameter or length deviation, thickness deviation, exposed thickness size and embedded depth and increased assembly clearance (see 7.2.5.2, 2007 version of 6.3.4.2); ---Changed the size and layout requirements of the basin bearing brass sealing ring (see 7.2.5.4, 6.3.4.5 of the.2007 edition), changed the finished product The overall height deviation of the basin bearing after assembly (see 7.2.5.8, 6.3.4.3 of the.2007 edition) has changed the anti-corrosion requirements of the basin bearing (See 7.2.6.2, 6.3.5 of the.2007 edition), the dimensional requirements for stainless steel cold-rolled steel plates for basin supports are added (see 7.2.5.3), Increased the size deviation of SF-1 slider (see 7.2.5.5); ---Added the test method for the compression deformation of the slide plate load and the friction coefficient and wear rate between the slide plate and stainless steel (see 8.2.2), and added the test method for the yellow The performance test method of copper (see 8.2.4), the test method of pressure transmitter (see 8.2.6) is added, and the test method of SF-1 slider is added. Test methods (see 8.2.7), the test method for the intrinsic quality of the pot bearing has been added (see 8.3.2), the test method for the process has been added (see 8.6); ---Added the inspection content of skateboard materials and anchor components, pressure transmitters, SF-1 sliders, dimethyl silicone among purchased raw and auxiliary materials Oil inspection items (see 9.2.1); ---Changed the content of factory inspection (see 9.2.2, 8.2.2 of the.2007 version); ---Added the content of on-site inspection of supports (see 9.2.4); ---The storage requirements have been changed, and the marking, packaging, transportation and storage of pressure transmitters have been added (see Chapter 10, Chapter 10 of the.2007 edition Chapter 9); ---Changed the mechanical properties test method of finished plate bearings (see Appendix D,.2007 version A.5.1); ---Changed the mechanical properties test method of finished pot bearings (see Appendix E, Appendix B of the.2007 edition); ---Added force measurement performance test method for finished force basin bearings (see Appendix F). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is sponsored by the Rubber and Miscellaneous Products Sub-Technical Committee of the National Technical Committee for Standardization of Rubber and Rubber Products (SAC/TC35/SC7) Return to home. This document was drafted by. Hebei Baoli Engineering Equipment Co., Ltd., Beijing Huateng Testing and Certification Co., Ltd., China Railway Scientific Research Railway Construction Research Institute of Research Institute Group Co., Ltd., Hengqiao Technology Co., Ltd., Zhongyu Tiexin Transportation Technology Co., Ltd., Chengdu Xinzhu Transportation Technology Co., Ltd., Zhonglu Hi-Tech Transportation Inspection, Inspection and Certification Co., Ltd., Hengwei Inspection, Inspection and Certification (Hebei) Group Co., Ltd. Company, Zhuzhou Times New Material Technology Co., Ltd., Zhejiang Tiantie Industrial Co., Ltd., Hengshui Rubber General Factory Co., Ltd., Zhejiang Qin Shan Rubber Engineering Co., Ltd., Shanghai Pengpu Rubber Products Co., Ltd., Liuzhou Dongfang Engineering Rubber Products Co., Ltd., Hebei Communications Investment Capital Group Co., Ltd., Ningbo Lubao Technology Industrial Group Co., Ltd., Hebei Tieke Yichen New Material Technology Co., Ltd., Fengze Intelligent Equipment Co., Ltd. Co., Ltd., Hengshui Jijun Bridge Gate Engineering Rubber Co., Ltd., JSTI Group Co., Ltd., Suzhou Haide New Material Technology Co., Ltd. Co., Ltd., Qingdao Haishengtai Materials Co., Ltd., Qingdao Tianbang New Materials Co., Ltd. The main drafters of this document. Gui Jianchen, Wang Xihui, Song Baoqing, Zang Xiaoqiu, Ma Meiqin, Li Yingdi, You Juetao, Li Ming, He Linnan, Yu Guangzhong, Liu Yingming, Wang Lizhi, Yuan Hongwei, Chen Zhiliang, Liu Zhidong, Zhao Wenzhong, Xu Su, Cui Yongsheng, Li Jiong, Liu Yanning, Ben Qingguo, Yang Jun, Li Jinhong, Zhao Jiuping, Su Zhiguo, Li Hong, Liu Xiao, Yu Chong. The previous versions of this document and the documents it replaces are as follows. ---First released in.2007 as GB 20688.4-2007; ---Effective from March 23,.2017, the standard was converted from a mandatory standard to a recommended standard; this is the first revision.IntroductionRubber bearings are currently one of the most widely used types of bearings and are mainly installed in bridges or other structures. In order to regulate market behavior, To control product quality and ensure project safety, GB/T 20688 "Rubber Bearings" has been formulated since.2006.GB/T 20688 "Rubber Bearings" It is planned to consist of five parts. ---Part 1.Test methods for isolation rubber bearings. The purpose is to establish the performance testing methods of isolation rubber bearings and rubber materials. This method provides guidance for standardizing various types of tests. ---Part 2.Bridge isolation rubber bearings. The purpose is to establish the classification and technical requirements of bridge isolation rubber bearings and guide bridges Design, production and inspection of isolation rubber bearings. ---Part 3.Building isolation rubber bearings. The purpose is to establish the classification and technical requirements of building isolation rubber bearings and guide construction Design, production and inspection of isolation rubber bearings. ---Part 4.Ordinary rubber bearings. The purpose is to establish the classification and technical requirements of ordinary rubber bearings and guide ordinary rubber bearings design, production and inspection. ---Part 5.Building isolation elastic skateboard bearings. The purpose is to establish the classification and technical requirements of elastic sliding plate bearings for building isolation and guide Design, production and inspection of elastic sliding plate bearings for building earthquake isolation. This document is Part 4 of GB/T 20688 "Rubber Bearings". Different from the seismic isolation bearings in other parts, the rubber bearings in this document are For bridges or other structures, it mainly plays the role of vertical bearing, adapting to the horizontal and rotational displacement of the superstructure, and vibration reduction protection. Ordinary rubber bearings are widely used due to their advantages such as simple structure, economy, reliability, and convenient installation and construction. GB/T 20688.4- The.2007 "Rubber Bearings Part 4.Ordinary Rubber Bearings" has been implemented for more than ten years, and has standardized market behavior, guided production and use, etc. played an important role, but some problems were also found in the actual production and use process, such as individual performance parameters specified in the standard cannot be truly The actual use characteristics of the support are embodied; the product installation is not standardized and the maintenance is not in place; the perception of the normal use status of the product is deviated; at the same time, the With the continuous updating and development of some new materials and new technologies, this standard has experienced lagging problems such as insufficient specifications and guidance. Therefore, for better To guide the design, production, installation, and maintenance of ordinary rubber bearings to ensure the scientificity and applicability of the standard, the standard has been revised. Rubber bearing Part 4.Ordinary rubber bearings1 ScopeThis document stipulates the technical requirements for finished product performance, materials, intrinsic quality, appearance quality, dimensions, etc. of ordinary rubber bearings, and describes the corresponding Sampling and test methods, stipulates inspection rules and marking, packaging, transportation and storage, etc., and also provides technical regulations for convenience Product classification, labeling and structural design information. This document is applicable to plate rubber bearings (hereinafter referred to as plate bearings) with a designed vertical bearing capacity of less than 10MN for bridges or other structures. seat) and the design, production, inspection and use of basin-type rubber bearings (hereinafter referred to as basin-type bearings) with a designed vertical bearing capacity of less than 100MN.2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 528 Determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber GB/T 699 High-quality carbon structural steel GB/T 700 carbon structural steel GB/T 1184-1996 Shape and position tolerances No tolerance values noted GB/T 1591 Low alloy high strength structural steel GB/T 1682-2014 Single sample method for determination of low-temperature brittleness of vulcanized rubber GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without tolerances noted GB/T 2040 Copper and copper alloy plates GB/T 2941 Rubber physical test methods General procedures for specimen preparation and adjustment GB/T 3077 alloy structural steel GB/T 3280-2015 Stainless steel cold-rolled steel plates and strips GB/T 3512 Hot air accelerated aging and heat resistance test of vulcanized rubber or thermoplastic rubber GB/T 6031 Determination of hardness of vulcanized rubber or thermoplastic rubber (10IRHD~100IRHD) GB/T 7233.1-2009 Ultrasonic testing of steel castings Part 1.General purpose steel castings GB/T 7659 Steel castings for welded structures GB/T 7759.1 Determination of compression permanent deformation of vulcanized rubber or thermoplastic rubber Part 1.Under normal and high temperature conditions GB/T 7760 Determination of bonding strength between vulcanized rubber or thermoplastic rubber and hard plate - 90° peeling method GB/T 7762 Static tensile test for ozone cracking resistance of vulcanized rubber or thermoplastic rubber GB/T 11345 Non-destructive testing of welds, ultrasonic testing technology, testing levels and assessments GB/T 11352 Cast carbon steel parts for general engineering use GB/T 13384 General technical conditions for mechanical and electrical product packaging GB/T 28699 General technical conditions for protective coating of steel structures HG/T 2366 dimethyl silicone oil HG/T 2502-1993 5201 silicone grease ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20688.4-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 20688.4-2023_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 20688.4-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20688.4-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
